Presidio of San Francisco

California's beautiful Presidio, located within the Golden Gate Recreation Area at the entry to San Francisco Bay, saw continuous use as a military base for 218 years by the Spanish, Mexican, and American armies. The Presidio Trust has actively restored and managed the site, and the park today looks very much as it did when the base was finally decommissioned 15 years ago. In an effort to continue their conservation efforts, the Presidio Trust commissioned a Digital Preservation Project of the historic buildings.